ICS Electronics VXI-5524 VXI Interface Module with Prototyping Board

The ICS Electronics VXI-5524 is a register-based VXI interface module that bridges custom circuitry to the VXIbus, enabling rapid prototyping of specialized test and measurement instruments. This low-cost platform mates with a user-supplied PCB to form a complete 'B' or 'C' size VXI module, delivering immediate VXI compliance without designing an interface from scratch.

Technical Specifications VXIbus Compliance

VXI-1 Revision 1.4 and VXI-2 compliant

Extended Register-Based Device specification Digital I/O

48 digital I/O signals arranged in three 16-bit registers

Configurable per 16-bit increment as latched outputs or gated inputs

TTL/CMOS compatible with 20 mA source and 40 mA sink capability

33 kOhm pullups standard; selectable 3.3V or 5V dc pullup voltage VXI Data Expansion Bus

16-bit bidirectional buffered expansion interface

Supports register, FIFO, and external logic circuit decoding

Address range 0x20 to 0x38 hex for user expansion registers Trigger Architecture

TTL trigger inputs and outputs connected to paired VXIbus TTL Trigger Lines

TrigIn# selectable to TTLTRG lines 0, 2, 4, or 6

TrigOut# capable of driving TTLTRG lines 1, 3, 5, or 7 Interrupt Handling

VXIbus interrupt capability with cause code reporting

Three user-definable cause code bits latched on IRQ input

Interrupt Control Register for line selection and enable management Electrical & Timing

Digital I/O and VXIbus logic: 3.3V with 5V tolerance

10 MHz clock selectable from VXIbus or internal oscillator

Power: 5 Vdc @ 150 mA, -5.2 Vdc @ 45 mA, -2 Vdc @ 9 mA

Key Features Flexible signal conditioning with user-configurable digital I/O and multiple trigger line assignments enables deployment across diverse applications. The expansion bus removes architectural constraints for circuits requiring more than simple register control. Integrated pullups and logic level translation simplify integration with legacy and modern logic families.

Typical Applications Custom sensor interfaces, real-time data acquisition subsystems, relay and switch control modules, and equipment-specific measurement front-ends within VXI instrument racks.